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Inventory Open-to-Buy Calculator

Find your open-to-buy dollars for the period — and see instantly if you're already over-bought.

✅ Built for wireless dealers ✅ Mobile-friendly ✅ Use the Tool Below!

Open-to-Buy Calculator

Plug in planned sales, markdowns, and inventory targets to see exactly what you can still spend on new stock.

What this Inventory Open-to-Buy Calculator helps you do

Calculate your retail open-to-buy in seconds: plug in planned sales, markdowns, EOM inventory target, on-hand stock, and open orders to see exactly how many dollars you have left to spend on new inventory this period.

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Inventory Open-to-Buy Calculator FAQ's

What does 'open-to-buy' actually mean?

Open-to-buy (OTB) is the dollar amount you're still allowed to spend on new inventory this period without blowing past your plan. It's your planned needs (sales + markdowns + ending inventory target) minus what's already covering those needs (inventory on hand + stock already on order).

What does it mean if my open-to-buy is negative?

A negative OTB means you're already over-bought — your on-hand inventory plus what's on order exceeds what your plan actually calls for. That's a signal to cancel or delay open orders, push harder on markdowns to move existing stock, or revisit your EOM inventory target before you place another PO.

Should I include inventory that's damaged or dead stock in BOM inventory?

Use your real, sellable on-hand value — not landed cost of stock you already know is dead or damaged. If you're carrying known dead stock, it inflates your BOM number and makes your OTB look tighter (or more over-bought) than it really is once that stock is written off.

How often should I recalculate open-to-buy?

Most dealers run this monthly, tied to their buy cycle, but if you're placing POs weekly or biweekly it's worth rerunning any time a new order lands — on-order dollars change fast and stale OTB numbers lead to overbuying.

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